/**
*     Copyright (c) 2023, Nations Technologies Inc.
* 
*     All rights reserved.
*
*     This software is the exclusive property of Nations Technologies Inc. (Hereinafter 
* referred to as NATIONS). This software, and the product of NATIONS described herein 
* (Hereinafter referred to as the Product) are owned by NATIONS under the laws and treaties
* of the People's Republic of China and other applicable jurisdictions worldwide.
*
*     NATIONS does not grant any license under its patents, copyrights, trademarks, or other 
* intellectual property rights. Names and brands of third party may be mentioned or referred 
* thereto (if any) for identification purposes only.
*
*     NATIONS reserves the right to make changes, corrections, enhancements, modifications, and 
* improvements to this software at any time without notice. Please contact NATIONS and obtain 
* the latest version of this software before placing orders.

*     Although NATIONS has attempted to provide accurate and reliable information, NATIONS assumes 
* no responsibility for the accuracy and reliability of this software.
* 
*     It is the responsibility of the user of this software to properly design, program, and test 
* the functionality and safety of any application made of this information and any resulting product. 
* In no event shall NATIONS be liable for any direct, indirect, incidental, special,exemplary, or 
* consequential damages arising in any way out of the use of this software or the Product.
*
*     NATIONS Products are neither intended nor warranted for usage in systems or equipment, any
* malfunction or failure of which may cause loss of human life, bodily injury or severe property 
* damage. Such applications are deemed, "Insecure Usage".
*
*     All Insecure Usage shall be made at user's risk. User shall indemnify NATIONS and hold NATIONS 
* harmless from and against all claims, costs, damages, and other liabilities, arising from or related 
* to any customer's Insecure Usage.

*     Any express or implied warranty with regard to this software or the Product, including,but not 
* limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement
* are disclaimed to the fullest extent permitted by law.

*     Unless otherwise explicitly permitted by NATIONS, anyone may not duplicate, modify, transcribe
* or otherwise distribute this software for any purposes, in whole or in part.
*
*     NATIONS products and technologies shall not be used for or incorporated into any products or systems
* whose manufacture, use, or sale is prohibited under any applicable domestic or foreign laws or regulations. 
* User shall comply with any applicable export control laws and regulations promulgated and administered by 
* the governments of any countries asserting jurisdiction over the parties or transactions.
**/

/**
*\*\file usbfsd_endp.c
*\*\author Nations
*\*\version v1.0.0
*\*\copyright Copyright (c) 2023, Nations Technologies Inc. All rights reserved.
**/

/* Includes ------------------------------------------------------------------*/

#include "usbfsd_lib.h"
#include "usbfsd_desc.h"
#include "usbfsd_mem.h"
#include "hw_config.h"
#include "usbfsd_istr.h"
#include "usbfsd_pwr.h"
#include "QueueLIB.H"


/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/

/* Interval between sending IN packets in frame number (1 frame = 1ms) */
#define VCOMPORT_IN_FRAME_INTERVAL             5

extern APIHANDLE g_TxHandleUSB;
extern APIHANDLE g_RxHandleUSB;

/**
*\*\name    EP1_IN_Callback.
*\*\fun     EP1 IN Callback Routine.
*\*\param   none
*\*\return  none 
**/
uint8_t usbBuf[VIRTUAL_COM_PORT_DATA_SIZE];  // send data handle buffer
void EP1_IN_Callback (void)
{
    uint32_t txLen = _QueueDataLen(g_TxHandleUSB); // Get the tx fifo len
    if (txLen > 0) {
        if (txLen > VIRTUAL_COM_PORT_DATA_SIZE) txLen = VIRTUAL_COM_PORT_DATA_SIZE;
        _QueueOutBlock(g_TxHandleUSB, txLen, usbBuf);
        USB_CopyUserToPMABuf(usbBuf, ENDP1_TXADDR, txLen);
        USB_SetEpTxCnt(ENDP1, txLen);
        USB_SetEpTxValid(ENDP1); 
    } else {
        extern uint8_t g_usbTxFlag;
        g_usbTxFlag = FALSE;
    }
}

/**
*\*\name    EP3_OUT_Callback.
*\*\fun     EP3 OUT Callback Routine.
*\*\param   none
*\*\return  none 
**/
void EP3_OUT_Callback(void)
{
    uint32_t Receive_length = USB_GetEpRxCnt(ENDP3);
    USB_CopyPMAToUserBuf(usbBuf, ENDP3_RXADDR, Receive_length);
    /* Enable the receive of data on EP3 */
    USB_SetEpRxValid(ENDP3);
    _QueueInBlock(g_RxHandleUSB, usbBuf, Receive_length);
    
    extern void usbd_RxIndCallBack(uint16_t rxLen);
    usbd_RxIndCallBack(Receive_length);   // Indicate the device has receive a context
}
